Footnotes

↵1 Rat α2D-ARs are the rodent homolog of human hα2A-ARs, to which they show marked differences as concerns affinities of certain drug classes (Hieble et al., 1995).

↵2 A more detailed discussion of the actions of drugs at hD2S, hD2L, hD3, and hD4 receptors, multiple classes of α1- and α2-AR and multiple subtypes of 5-HT receptor is to be found in the accompanying articles, which document drug efficacies at these sites.